Seems alright. They are really keeping that UR land a secret until the end.
Oh hey, one of the leaks turned out to be fake. It was previously claimed that this land would be BG: CARDNAME becomes a 3/3 black and green Elemental creature with "B: Regenerate this creature" until end of turn. It's still a land.
As for Oath of Jace, there isn't actually any spell that just straight up does "draw three, discard two" (Brainstorm is similar, but that's a bad card to compare to anyway). There are cards like Compulsive Research, and Oath of Jace of course is worse than that.
It's best to assume that a player will usually only have one planeswalker out in Constructed, so it will usually just have the upkeep effect of scry 1. Even if you have more out, I don't believe it will be that big of a benefit. God, I really hope Oath of Chandra doesn't deal X damage to a player on each upkeep.
As for General Tazri, just the fact that she's a creature that tutors for a relevant creature type makes her fine in Limited, and if there is a big Ally deck that isn't aggro, I expect that she'll see play.
Also, Friday Night Magic promo for March is Smash to Smithereens, which was in Magic Origins and thus will still be in Standard come Shadows over Innistrad.
Another one
Interesting
Lol scry?
Conduit of ruin the turn after you play this is sick
That's pretty neat. I was about to suggest turning all of your Scions into Ulamog, but that doesn't work because legendary (though you can get one). So Bane of Bala Ged instead.